Use of the time_before() macro, defined at linux/jiffies.h, which deal
with wrapping correctly and are nicer to read.

Signed-off-by: Marcelo Feitoza Parisi <marcelo@feitoza.com.br>

--- linux/drivers/net/hamradio/baycom_epp.c	2005-07-13 17:53:28.000000000 -0300
+++ linux-kj/drivers/net/hamradio/baycom_epp.c	2005-07-16 03:46:40.491146568 -0300
@@ -911,7 +911,7 @@
 	/* autoprobe baud rate */
 	tstart = jiffies;
 	i = 0;
-	while ((signed)(jiffies-tstart-HZ/3) < 0) {
+	while (time_before(jiffies, tstart + HZ/3)) {
 		if (pp->ops->epp_read_addr(pp, &stat, 1, 0) != 1)
 			goto epptimeout;
 		if ((stat & (EPP_NRAEF|EPP_NRHF)) == EPP_NRHF) {